Modelling changes to submarine pipeline embedment and stability due to pipeline scour
Modelling changes to submarine pipeline embedment and stability due to pipeline scour
In this paper a beam bending model is combined with existing predictive formulas for pipeline scour to study changes to pipeline stability during scour and lowering. The model is introduced and demonstrated for a range of simplified conditions, including scour-induced lowering of a pipeline resulting from multiple uniformly spaced scour initiation points. The model is then used with a synthetic seabed generated with a variety of length scales. In this simulation the pipeline is 'laid' onto the seabed, leading to the formation of 'natural' initiation points for scour. The distribution and spacing of the initiation points (which are a function of the pipeline bending stiffness, tension and seabed roughness) lead to different rates of pipeline lowering and stability. The resulting model may be used within a probabilistic framework to estimate changes to pipeline stability resulting from sediment mobility and scour.
The American Society of Mechanical Engineers
Draper, Scott
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Griffiths, Terry
24b3e648-f03d-4597-a69b-c2f90c2f70eb
Cheng, Liang
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White, David
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An, Hongwei
e8b6f5ed-c6bd-4253-b6d1-aab7b60e8cb3
2018
Draper, Scott
efe46b7d-3989-403b-8b19-0b17dd54194f
Griffiths, Terry
24b3e648-f03d-4597-a69b-c2f90c2f70eb
Cheng, Liang
0ce99dcc-f682-4ec6-97aa-59fd87174385
White, David
a986033d-d26d-4419-a3f3-20dc54efce93
An, Hongwei
e8b6f5ed-c6bd-4253-b6d1-aab7b60e8cb3
Draper, Scott, Griffiths, Terry, Cheng, Liang, White, David and An, Hongwei
(2018)
Modelling changes to submarine pipeline embedment and stability due to pipeline scour.
In Pipelines, Risers, and Subsea Systems.
vol. 5,
The American Society of Mechanical Engineers.
11 pp
.
(doi:10.1115/OMAE2018-77985).
Record type:
Conference or Workshop Item
(Paper)
Abstract
In this paper a beam bending model is combined with existing predictive formulas for pipeline scour to study changes to pipeline stability during scour and lowering. The model is introduced and demonstrated for a range of simplified conditions, including scour-induced lowering of a pipeline resulting from multiple uniformly spaced scour initiation points. The model is then used with a synthetic seabed generated with a variety of length scales. In this simulation the pipeline is 'laid' onto the seabed, leading to the formation of 'natural' initiation points for scour. The distribution and spacing of the initiation points (which are a function of the pipeline bending stiffness, tension and seabed roughness) lead to different rates of pipeline lowering and stability. The resulting model may be used within a probabilistic framework to estimate changes to pipeline stability resulting from sediment mobility and scour.
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Published date: 2018
Venue - Dates:
37th International Conference on Ocean,
Offshore & Arctic Engineering: OMAE2018, , Madrid, Spain, 2018-06-17 - 2018-06-22
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Local EPrints ID: 422786
URI: http://eprints.soton.ac.uk/id/eprint/422786
PURE UUID: 61eb9cc2-0cff-4be9-af1e-ea4cee573b94
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Date deposited: 06 Aug 2018 16:30
Last modified: 16 Mar 2024 04:32
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Author:
Scott Draper
Author:
Terry Griffiths
Author:
Liang Cheng
Author:
Hongwei An
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